The St. Louis Art Museum is preparing to debut a $160-million expansion.

The St. Louis Post-Dispatch reports that the public will get the first look June 29 at the new East Building.

British architect David Chipperfield designed the 210,000-square-foot building, with its dark polished facade, skylights and concrete coffers. It's Gold LEED-certified, features 21 galleries, an underground garage, a restaurant and a gift shop. The project also includes new classrooms, flooring and updated galleries in the main and south buildings.